Abstract The method of calculating material damage using ultrasonic wave velocities are widely used, however the variation in Poissons ratio was often ignored in past researches. The effect of Poissons ratio variations on damage calculation of concrete based on ultrasonic wave velocities was investigated. Firstly, the Poissons ratio correction factor was introduced into the wave velocity-based damage calculation equation through theoretical analysis. Secondly, the necessity of considering Poissons ratio variations was verified by conducting axial compression tests on concrete column specimens. Finally, a Poissons ratio correction factor calculation method was proposed on the basis of the experimental data. The results show that the average relative error between the calculated value based on wave velocity and true value of concrete damage is up to 73% when the effect of Poisson’s ratio variation is ignored, and the error is reduced to 21% by applying the Poissons ratio correction factor. These findings suggest that it is advisable to include the Poissons ratio correction factor to improve the accuracy of the calculation when calculating concrete damage based on wave velocity.
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2024, Vol. 45 
